News Release

Dynegy Closes on Brayton Point Sale

HOUSTON--(BUSINESS WIRE)--Jan. 22, 2018--
Dynegy Inc. (NYSE: DYN) has completed the sale of its 307-acre site of
the former Brayton Point Power Station in Somerset, Mass. to Commercial
Development Company, Inc.

The previously disclosed transaction includes Commercial Development
Company’s assumption of environmental responsibilities associated with
the site. The Brayton Point facility was one of 10 power generation
facilities purchased by Dynegy from Energy Capital Partners in April
2015. The decision to retire the 1,488-megawatt, coal-fueled facility,
which was commissioned in 1963, was made prior to Dynegy’s purchase of
the facility. The plant ceased operations at the end of May 2017.

About Dynegy

Throughout the Northeast, Mid-Atlantic, Midwest, Texas, and California,
Dynegy operates more than 27,000 megawatts (MW) of power generating
facilities capable of producing enough energy to supply more than 23
million American homes. Through our retail business, we serve 1.2
million customers who depend on reliable, affordable energy to grow and
thrive.